System and method for data communication

摘要

A data communication system includes a terminal identification information adding unit (54, 56) generating a unit carrier wave (D7) including a plurality of periods of a carrier wave and arranging the unit carrier wave (D7) in arrangement patterns differing at every transmission terminal (51, 51R, 70, 70R) to generate a unit carrier row signal (D8) shorter than one bit of the digital transmission data (D1), a transmission timing determination unit (53) detecting a binary inversion timing of the digital transmission data (D1) and causing the terminal identification information adding unit (54, 56) to transmit the unit carrier row signal (D8) every time the binary is inverted, a reception timing distinguishing unit (63-66) generating a reception timing signal (D9) in synchronization with reception of the unit carrier row signal (D8) and collecting the reception timing signal (D9) of the unit carrier row signal (D8) of the same type, and a digital data restoring unit (67) inverting the binary according to the collected reception timing signal (D9), restoring the digital transmission data (D1).